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horrorfan [7]
3 years ago
6

How many killowatts would a heater use at 500 watts for 12 hours?

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
7 0
The heater uses 500 watts, which is 0.5kW, but the kWh value is 6 kWh.
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Solve the simultaneous equations <br> 3 x + 2 y = 18 <br> 3 x + y = 12
natulia [17]

Answer:

x=2 , y=6

Step-by-step explanation:

        3 x + 2 y =    18

        3 x +     y =   12

     (-)       (-)         (-)

-------------------------------------------

                     y =    6

                 

3x+6=12

=>3x=12-6

=>3x=6

=>x=6/3

=>x=2

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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

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3 0
3 years ago
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Oksana_A [137]

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C.

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Step-by-step explanation:

The correct answer would actually be 15 because (-5) multiplied by -3 makes it positive 15.

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3 years ago
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